Effect of the high dose/refuge strategy on Bt-crop yield dynamics (mathematical simulation)
2011
A mathematical model is presented that describes interactions between Bt-crops and insect pests taking into account the plant growth rate, consumption of plant biomass by pests, suppression of insect proliferation by Bt toxins, emergence of Bt-resistant insects and their mixing with the wild type. It is shown that migration of Bt-susceptible insects from “refuge plots” onto the Bt-crop field invaded by resistance-carrying insects improves the yield dynamics; being high enough, this inflow eventually eliminates the resistant pest population.
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